Heddle-operating mechanism for looms



NITED STATES PATENT OFFICE.

JOSEPH O. POTTS, OF BERWYN, PENNSYLVANIA.

HEDDLE-OPERATING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 357,096 dated February1, 1887.

Application filed August 28, 1886. Serial No. 212,069.

To aZZ whom it may concern.-

Be it known that I, Josnrn 0. Ports, a citizen of the UnitedStatesfresiding at Berwyn, Pennsylvania, have invented certainImprovements in Heddle-Operating Mechanisms for Looms, of which thefollowing is aspecification.

My invention relates to that class of heddleoperating mechanism in whichthe operating devices are below the heddles, the main ob jects of myinvention being to so construct the heddle-operating mechanism as toprovide for the compact arrangement of the heddles, to permit the rapidoperation of the same, and to lock them in their extreme positions.These objects I attain in the manner which I will now proceed todescribe, reference being had to the accompanying drawings, in which,

Figures 1, 2, and 3 show face views, partly in section, of sufficient ofa loom to illustrate my invention.

A A represent part of the opposite-side frames of the loom, and B one ofthe heddles free to slide in guides A at the upper portion of the loom,the heddles being placed side by side and as closely together as isconsistent with their free movement. Only one of the heddles and itsoperating mechanism is shown, the mechanism being the same for eachheddle. The heddle is supported by or connected to a bar, D, suitablyguided "in the frame of the loom, and connected at the lower end to onearm of a lever, F, which is hung to a rod, a, carried by a frame, G,secured to the floor. To pivot-rods b on this frame are hung levers J,the lower arms of which are connected by a rod, K, the upper arms of thelevers acting upon the opposite arms of the lever F, which,

' as shown, may be recessed for the reception of said levers, so thatthere will be no loss of space due to the lapping of one upon the other.

The rod K has a projecting arm, d, the lower end of which is adapted toa recess in the top of a bar, M, which is slotted for the reception ofaguide-pin, f, carried by the frame G. The other end of the bar M isunderthe control of a pattern-chain, P, the latter acting on an arm, 9,connected to the bar M by a rod, h, and said bar has at the top andbottom a projecting lug, t, to be acted upon by one or other of tworeciprocating bars, S, which are guided in a (No model.)

directions, the rods m connecting said bars to a T-lever, it, the thirdarm of which is con nected by a rod, p, to the crank-shaft O of theloom.

When the outer end of the bar M is lifted by the pattern-chain, theupperlug, t, of the same is acted upon by the upper-bar S, and saidshown, the essential feature of my present in vention consisting of themeans whereby the reciprocating movement of the bar M is caused toeffect the rocking or vibrating movement of the lever F and a consequentrise and fall of the heddle-frame connected thereto.

It will be observed that when the bar M is moved to its full extent tothe right, as shown in Fig. 1, the upper arm of the right-hand lever Jand the right-hand arm of the lever F,

upon which said lever J acts,will be depressed, the upper arm of theleft-hand lever J and the corresponding arm of the lever F beingelevated, as shown in saidfigure, and the lefthand lever J occupying aposition parallel with the line of thrust thereon, so that theheddle-frame is locked in the elevatedposition, the downward strain uponthe lever J being resisted by the p'ivotrod of the latter, and no partof said strain being transmitted to the bar M.

When the bar M is moved to its full extent to the left, as shown in Fig.2, the conditions are reversed, the heddle-frame being depressed to itsfull extent, and the strain caused by the tendency of said frame to riseunder the influence of the tension of the warp being resisted by theright-hand lever J, which now IkU upon the lever F and no tendency tomove the bar M in either direction; hence the lug of the bar is notpressed firmly against the bar S, and said bar M can be readily moved by5 the pattern-chain as the exigencies of the pattern may demand.

I claim as my invention The combination of a heddle-franie and asupporting'lever therefor, a heddle-actuating [0 bar and means forreciprocating the same under the control of the pattern-chain, a pair oflevers each acting on one of the arms of the heddle-supporting lever,and a rod connecting said levers and acted upon by the heddle-aetuatingbar, all substantially as specified.

In testimony whereof I havesigned my name to this specification in thepresence of two subscribing witnesses.

JOSEPH O. POTTS.

Vitnesses:

\VILLIAM D. CONNER, HARRY SMITH.

